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THORACIC DIVERTICULUM - Arises in the middle third of the thoracic esophagus - Traction diverticulum (arrow) that develops in response to the pull of fibrous adhesion after mediastinal lymph node infection or inflammation (star)

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EPIPHRENIC DIVERTICULUM Arises in the distal of the esophagus, just above diaphragm Pulsion diverticulum (arrow) that probably related to incoordination of esophageal peristalsis and relaxation of the lower esophageal sphincter

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1. Serpiginous filling defects which appear as round or oval filling defects resembling the beads of a rosary( dilated venous structures) ( arrowhead). 2. Changes size and appearance with variations in intrathoracic pressure and collapse with esophageal peristalsis and distension. 3. Varices related to portal hypertension are most commonly demonstrated in the lower third of the esophagus. 4. In portal hypertension ; common accompanying gastric varices(arrow). ESOPHAGEAL VARICES : The characteristic radiographic appearance